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  3. b) interpret the coefficients in the estimated reg

b) Interpret the coefficients in the estimated regression model of Sales on Csales. c) Before estimating...

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Question

Statistics

b) Interpret the coefficients in the estimated regression modelof Sales on Csales. c) Before estimating the model, the managerclaimed that for every 1 million increase in Csales, Sales go downby 2 million. Is there evidence from the estimated model that shewas not correct? Answer by constructing an appropriate 95%confidence interval. d) What is the correlation between Sales andCsales?

Region

Sales

Advertising

Promotions

Csales

Selkirk

101.8

1.3

0.2

20.4

Csales=main competitor's sales

Susquehanna

44.4

0.7

0.2

30.5

Sales=sales of company's Nature -Bar

Kittery

108.3

1.4

0.3

24.6

Acton

85.1

0.5

0.4

19.6

Finger Lakes

77.1

0.5

0.6

25.5

Berkshires

158.7

1.9

0.4

21.7

Central

180.4

1.2

1

6.8

all variables are in millions of dollars

Providence

64.2

0.4

0.4

12.6

Nashua

74.6

0.6

0.5

31.3

Dunster

143.4

1.3

0.6

18.6

Endicott

120.6

1.6

0.8

19.9

Five-Towns

69.7

1

0.3

25.6

Waldeboro

67.8

0.8

0.2

27.4

Jackson

106.7

0.6

0.5

24.3

Stowe

119.6

1.1

0.3

13.7

Answer & Explanation Solved by verified expert
4.5 Ratings (998 Votes)
Here I have solved this question by using MINITAB Stat Regression Response Y Predictor X OK Let Y Sales X    See Answer
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